公开(公告)号：JPS5342048A

公开(公告)日：1978-04-17

申请号：JP11594076

申请日：1976-09-29

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  ROKUSHIYA KIYOSHI ,  KIKUCHI FUMI

IPC: G02B3/00

Abstract: PURPOSE:To enable fabrication of miniture lens with ease by those other than skilled persons by melting with heating the tip portion of a long glass material to form a curved face and then cutting the tip portion, followed by polishing.

公开(公告)号：JPS5310444A

公开(公告)日：1978-01-30

申请号：JP8477776

申请日：1976-07-15

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  TANAKA MINORU ,  MIKI MASAJI ,  KIKUCHI FUMI ,  TSUKAMOTO MAKOTO

IPC: G02B6/02 ,  G02B6/28 ,  G02B6/42

Abstract: PURPOSE:To use as a branch signal the transmission light, which leakes from the abutting portions of optical transmission wires, by by-passing the transmission light by means of an optical guide.

公开(公告)号：JPS5254466A

公开(公告)日：1977-05-02

申请号：JP13021775

申请日：1975-10-28

Applicant: FUJITSU LTD

Inventor： UTORO KAZUYUKI ,  OKADA HISANAO ,  NAKAMURA OSAMU

IPC: G01R15/24 ,  G01R33/032

Abstract: PURPOSE:A power line is run through the inside of a hollowed cylinder made of a magnetostrictive material wound on its outside with an optical fiber and the changes in current is detected as the transmission loss of the fiber, whereby the easy and accurate accurate measurement of superhigh voltage current is made possible without any effect of the changes in temperature.

公开(公告)号：JPS5254450A

公开(公告)日：1977-05-02

申请号：JP13021675

申请日：1975-10-28

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  TSUKAMOTO MAKOTO

IPC: H04B10/25 ,  G01M11/02 ,  G02B6/02 ,  G02B6/14 ,  H04B10/00 ,  H04B10/2507 ,  H04B10/2581

Abstract: PURPOSE:To restric pulse expansion and reduce transmission loss by bening a multimode type opecial fiber by putting it between uneven surface and then bringing it into contact therewith under pressure.